Unless you know exactly who created it and why, don’t install it. You can upload it to VirusTotal to check for malware signatures.
It sounds like you’re referencing an APK file named — possibly asking for its story, origin, or purpose. file_v2.8_encurta.apk
If you remember where you got the file from (a specific website, app, or person), I can help investigate its reputation further. Unless you know exactly who created it and